Method and apparatus adapted for automatic or semi-automatic fab

Details Method and apparatus adapted for automatic or semi-automatic fab Method and apparatus adapted for automatic or semi-automatic fab

1982-07-01

1984-07-17

Sikes, William L.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

5116572, 51284R, 356363, G01B 902

Patent

active

044602758

ABSTRACT:
A method for forming a plurality of optical surfaces on an optical lens precursor, desirably a "soft" contact lens button or blank, to yield a lens adapted for proximate or intimate contact with an eyeball and defined by at least one posterior surface, an edge and at least one anterior surface, is comprised of forming a precision lens precursor, assembling the precursor in a microsurface generating apparatus, ultra-precisely forming the curves or geometry comprising the posterior surface and a portion of the edge to yield a semi-finished lens, blocking the semi-finished lens on an adhesively coated lens block fixture having an ultra-precisely preformed face for intimate precision mating with the posterior surface of the semi-finished lens, reassembling the semi-finished lens/fixture in the microsurface generating apparatus, ultra-precisely forming the curves or geometry comprising the anterior surface and another portion of the edge, and demounting a finished, ultra-precision lens from the blocking fixture. Also disclosed is a fluid-bearing automatic or semi-automatic machine for performing the instant method to ultra-precision, e.g., by computer control.

REFERENCES:
patent: 3169350 (1965-02-01), Corman
patent: 3692413 (1972-09-01), Marcy et al.
patent: 3791739 (1974-02-01), Kawasaki
patent: 3796494 (1974-03-01), Takabayashi
patent: 3884580 (1975-05-01), Webster et al.
patent: 3913274 (1975-10-01), Raiford et al.
patent: 4083272 (1978-04-01), Miller
patent: 4365301 (1982-12-01), Arnold et al.

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